Clamp



- IO the opposite side of the bar, in which is an '15 the clampingaw isalso the movable one; but

20 in which similar letters of reference indicate UNITED STATES PATENTOFFICE.

LUTHER D. WRIGHT, OF GARPENTERSVILLE, ILLINOIS.

CLAMP.

SPECIFICATION forming part-of Letters Patent No. 273,2:15, datedFebruary 2'7, 1883.

Application filed September 16, 1882. (Model.)

lever so as to bind against the bar a. it will press jaw toward jaw 12and cause it to powerfully clamp any object between them, the movablejaw being properly set with respect to the To all, whom it may concernBe it known that I, LUTHER I). Wanna, of Carpentersville, Kane county,Illinois, have invented anew and Improved Clamp, of which the followingis a full, clear, and exact description.

My improvement in clamps consists of one of the jaws having pivotalconnection with the bar, together with a lever extension on be clamped.It is to be noted that the pivotal point It hears about the samerelation to the top of the bar at and the base of the jaw b in botharrangements.

as new and desire to secure by Letters Patent- 1. In a clamp, the rackor toothed bar, ajaw fulcrumed upon said bar to oscillate thereon, andhaving downward-extended arms, and an eccentric-lever which swings andbinds the jaw fast on the work, said jaw either pivoting on theratchet-notches of the bar or a pivot connecting it to said bar. Intheformer case of the jaw and adapted to bear against the rack ortoothed bar, in combination with an opposing jaw, one of said jaws beingadapted to slide upon and engage with the teeth of in the latter casethe other one is movable, all as hereinafter fully described. v

Reference is to be had to the accompanying drawings, forming part ofthis specification,

pose set forth.

2. In aclamp, the combination of a rack or toothed bar, a movable jaw,and a fixed jaw,

one of said jaws having parallel arms einbraccorresponding parts in allthe figures.

Figure 1 is a perspective view of my con;

trivance, in which the leveraw is also the movable one. Fig. 2 is asectional elevation of the jaws and side view of the bar of the clamp,in which the lever-jaw is pivoted to the bar and the otherjaw is themovable one; and Fig. 3 is an end elevation of Fig. 2 as seenlookin gtoward the left hand.

0 The bar a of the clamp will have afixed jaw, 11, andratchet-notches 0along the upper surface, the lever-jaw 6 being adjustable along it andpivoting in its notches; or it will have the lever-jaw e pivoted to itat one end, with ratchet- 3 5 notches cin the under side of flanges f,with the jaw I) made to slide along it and fastening by the catches g.In either case the lever-jaw e tween the arms of said jaw and bearingdirectly against the rack-bar, as shown and described, and for thepurpose set forth.

3. In a clamp, the combination, with the the pivotal jaw 0, having thepivotal point 70, adapted to engage with the teeth or rack c of the bara, said jaw 0 also having arms i, between which is hung theeccentric-lever I, hearing directly against the bar a, substantially as7 and for thepurpose set forth.

LUTHER D. WRIGHT.

has arms 41 extending beyond the pivotal point It, and having aneccentric-lever, l, pivoted to them in such manner that by swinging saidWitnesses t O. E. GRIFFITH,

A. L. PETERSON.

other one and the dimensions .of the object to 5 Having thus describedmy invention,I claim eccentric or cam lever hung between said arms 5 therack-bar, substantially as and for the pur- 6o ing said bar, and aneccentric-lever hung be- 6:

toothed or notched bar at, having thejaw b, of 71

